Why Citation Style Matters
Academic citation is not just about avoiding plagiarism — it is a standardised communication system that tells readers where to find your sources, signals credibility, and allows other researchers to verify your work. Different academic disciplines have developed their own citation conventions to reflect what information matters most in their field. Using the wrong style is an academic error that can affect your grades and, at the professional level, your publication prospects.
APA (American Psychological Association) — 7th Edition
Used for:
Psychology, social sciences, education, business, economics, criminology, nursing.
Key characteristics:
- Author-date in-text citations: (Smith, 2024) or Smith (2024) found that...
- Reference list at the end (not "Bibliography" or "Works Cited")
- Author's last name + first initial only (not full first name)
- Date placed immediately after author in both in-text and reference list
- Book and journal titles in sentence case (only first word and proper nouns capitalised)
- Hanging indent in reference list
Example reference (journal article):
Smith, J., & Jones, M. (2024). The effects of sleep on cognition. Journal of Psychology, 45(2), 112–128. https://doi.org/10.1000/xyz123
MLA (Modern Language Association) — 9th Edition
Used for:
Literature, humanities, language arts, linguistics, cultural studies, philosophy, art history.
Key characteristics:
- Author-page in-text citations: (Smith 42) or Smith argues that... (42)
- Works Cited list at the end
- Full first name for all authors
- Date at the end of the reference entry (after publication details)
- Book and journal titles in Title Case and italicised
- The container concept: sources within larger "containers" (journal, website, anthology)
Example reference (journal article):
Smith, John. "The Effects of Sleep on Cognition." Journal of Psychology, vol. 45, no. 2, 2024, pp. 112–128.
Chicago (17th Edition)
Chicago style has two distinct systems. Always confirm which one your institution or publisher requires.
Notes-Bibliography (NB) system:
- Used for: History, arts, humanities, some social sciences
- Numbered footnotes or endnotes in the text
- Full source details in the note on first citation, shortened form on subsequent citations
- Bibliography at the end listing all sources
Author-Date (AD) system:
- Used for: Physical, natural, and social sciences
- Similar to APA: (Smith 2024) in-text citations
- Reference list at the end
AMA (American Medical Association) — 11th Edition
Used for:
Medicine, health sciences, biology, clinical research, medical journalism.
Key characteristics:
- Numbered superscript citations: ...found in multiple studies.¹²
- References numbered in the order they first appear in the text
- All authors listed (up to 6; "et al." for 7 or more)
- Journal names abbreviated per standard medical abbreviations
- DOI or URL for online sources
Example reference (journal article):
1. Smith J, Jones M. The effects of sleep on cognition. J Psychol. 2024;45(2):112-128. doi:10.1000/xyz123
Quick Decision Guide
| Your subject | Use this style |
|---|---|
| Psychology, Education, Social Work | APA 7th |
| English Literature, Humanities | MLA 9th |
| History, Philosophy, Art | Chicago NB |
| Sciences, Economics | Chicago AD or APA |
| Medicine, Nursing, Biology | AMA 11th |
| Engineering, Computer Science | IEEE |
| Not sure | Check your institution's style guide or ask your instructor |
Use the CalcDash Citation Generator
Our free Citation Generator supports APA 7th, MLA 9th, Chicago 17th, and AMA 11th editions simultaneously. Enter your source details once and get all four formats in one click — no signup required.